Massive refactoring in FormatMessage and LuaCallNode

Source/Integration/FormatDataLibrary.h

@@ -36,6 +36,52 @@
 
 #include "FormatDataLibrary.generated.h"
 
+////////////////////////////////////////////////////////////
+//
+// ElxFormatLogVerbosity
+//
+// Controls the ELogVerbosity of the UE_LOG directive inside
+// FormatLogMessage.  Also controls the throttling of log
+// messages.
+//
+// Fatal is deliberately placed at the end so that the
+// editor defaults to Error (value 0) when the dropdown is
+// uninitialized. The numeric values don't match
+// ELogVerbosity, so a conversion function is needed.
+//
+////////////////////////////////////////////////////////////
+
+UENUM(BlueprintType)
+enum class ElxFormatLogVerbosity : uint8 {
+
+	/** Prints an error to the console and log file. The editor collects and reports errors. */
+	Error,
+
+	/** Prints a warning to the console and log file. The editor collects and reports warnings. */
+	Warning,
+
+	/** Prints a message to the console and log file. */
+	Display,
+
+	/** Prints a message to the log file, but not to the console. */
+	Log,
+
+	/** Like Display, but suppresses repeated messages with the same format pattern (at most once per second). */
+	ThrottledDisplay,
+
+	/** Like Log, but suppresses repeated messages with the same format pattern (at most once per second). */
+	ThrottledLog,
+
+	/** Prints a message to the log file only if Verbose logging is enabled for the given category. */
+	Verbose,
+
+	/** Prints a message to the log file only if VeryVerbose logging is enabled. */
+	VeryVerbose,
+
+	/** Prints a fatal error to the console and log file, then crashes (this crashes the editor too). */
+	Fatal,
+};
+
 ////////////////////////////////////////////////////////////
 //
 // UlxFormatDataLibrary
@@ -51,13 +97,24 @@ class UlxFormatDataLibrary : public UEditorSubsystem
 public:
 	virtual void Initialize(FSubsystemCollectionBase& Collection) override;
 
-	// Get all converter functions (functions with an
-	// "AutoConvertedValue" parameter) found across all
-	// loaded classes.
+	// Given a pin type, find a converter function that can turn
+	// that type into an FFormatArgumentData.  If AllowWild is true,
+	// unconnected wildcard pins will use the Blank converter.
+	// Returns nullptr if no converter is found.
 	//
-	const TArray<UFunction*>& GetConverters() const { return Converters; }
+	static UFunction* GetConverterForPinType(const UEdGraphSchema_K2 *Schema, const FEdGraphPinType& PinType, bool AllowWild);
+
+	// Format a message using FTextFormatter::Format, and send
+	// it to UE_LOG.  The Context object's name is used as the
+	// log category.   Meant to be used internally by the Format
+	// Log Message K2Node.
+	//
+	UFUNCTION(BlueprintCallable, meta=(WorldContext = "Context", BlueprintInternalUseOnly = "true"))
+	static void FormatLogMessageInternal(UObject *Context, ElxFormatLogVerbosity Verbosity, const FString &InPattern, TArray<FFormatArgumentData> InArgs);
 
 private:
+	static ELogVerbosity::Type ConvertElxFormatLogVerbosity(ElxFormatLogVerbosity Verbosity);
+
 	// Scan all loaded classes for converter functions.
 	//
 	void ScanForConverters();